This image features a deep field view of the Cassiopeia constellation immersed in the glow of ionized hydrogen gas, where the ...

Binary neutron star mergers occur millions of light-years away from Earth. Interpreting the gravitational waves they produce presents a major challenge for traditional data-analysis methods.

Both nebulas are the leftover remnants from the last phase of a medium star like our sun. The other small bright bluish ball visible to the left of center in the image is known as Abell 6.